17d, Belsize Square, London, NW3 4HT
About 17d
17d is a semi-detached house in London (NW3 4HT). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to before 1900 and council tax band G. At 98 m² this is the 31st smallest of 52 units on EPC record in the building, where floor areas span 39–211 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (June 2016) shows a C (score 72). The latest certificate is from June 2016, so improvements made since then won't be reflected.
Held since February 2004 — that's 22 years off the open market, well above the local norm. Today's modelled estimate of £1,228,000 sits 158.5% above the 2004 sale of £475,000. On a £-per-square-foot basis, the last sale (£450/sq ft) was about 23.9% below the postcode norm. 3 planning records sit against the property, 0 approved, 0 refused.
Know exactly what you're buying at 17d
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 02 Jun 2026
EPC Rating
Planning history
Planning history at 17d is exclusively tree-management applications — typical for a property with mature trees on or near the plot.
- Jul 2020Tree WorksTreesIn report
REAR GARDEN: 1 x Ash (T1) - Reduce crown by 30%, 2.5m of height and 2m width. 1 x Sycamore (T2) - Reduce crown by 30%, 3m of height and 2m width.
- Documents
- 4 docs on file
- Reference
- 2020/2417/T
- Feb 2004Tree WorksTreesIn report
REAR GARDEN 1 x Laburnum - fell.
- Documents
- 2 docs on file
- Reference
- 2004/0289/T
We flagged 1 thing worth checking at 17d
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
17d valuation sits well clear of the typical sold price in this postcode.
£1,228,000
Modelled from EPC, postcode comparables.
£475,000
Recorded with HM Land Registry.
Sales timeline
20 February 2004Most recent
£475,000
Median price across the last 5 sales in NW3 4HT: £1,000,000 (2024–2022).
Nearby sales in NW3 4HT
Flat 5, 8 Belsize Square, London, NW3 4HT
Sold Nov 2024
£1,090,000Flat B, 10 Belsize Square, London, NW3 4HT
Sold Sept 2023
£617,500Flat 4, 22 Belsize Square, London, NW3 4HT
Sold Aug 2022
£1,330,000Flat 5, 22 Belsize Square, London, NW3 4HT
Sold May 2022
£1,000,0004e, Belsize Square, London, NW3 4HT
Sold Mar 2022
£519,000
Everything we know about 17d, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
Versus other Belsize Square homes
17d is notably below the street on price per m².
Price per m²
£4,847
Street avg £9,596
Floor Area
98 m²
Street avg 92 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
2.8 t/year
Street avg 3.7 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Belsize Square — bus stop.
Closest school
0.5 km
Holy Trinity CofE Primary School, NW3. 70 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
53.9dB
Night-time· 23:00 – 07:00
42.9dB